Kanye West disses JT & Jay-Z's song at his concert in London

Now that Jay Z is touring with someone else, Kanye is kinda feeling...a little jealous? Last night during his concert in London Kanye fired off another rant and this time he took a shot at his rap BFF, Jay-Z. Kanye told concert goers he's not a fan of Justin Timberlake and Jay Z's new song - Suit & Tie

Kanye said: "I got love for Hov, but I ain't f--king with that 'Suit & Tie.'"

Jay Z and Justin Timberlake just announced a joint Suit & Tie world tour for the summer. Ouch. Lol. Don't do it, Kanye. Don't take on Jay Z. It won't end well! Hehe